Cleaning of oven doors

Abstract

A machine for cleaning the sealing surfaces of coke oven doors or door jambs. A high pressure water jet is emitted from a nozzle which is driven on a closed path adjacent the sealing surface, the nozzle block being rotatably mounted with respect to its carriage so that the nozzle block can be driven continuously in the same direction without twisting the water supply hose.

We claim: 
     
       1. A machine for cleaning the sealing surfaces of an oven door or door jamb, said machine including a frame, a driveable conveying means held in said frame and having a carrier mounted thereto, means for driving the carrier continuously on a closed path adjacent and parallel to the sealing surfaces of the door or jamb, and water nozzle means rotatably mounted in or on the carrier for rotation about its axis relative to said carrier, such that as the carrier moves on its closed path the nozzle means may direct a jet of water towards the sealing surfaces of the door or jamb without rotating about its own axis. 
     
     
       2. A machine according to claim 1 including flow control means associated with the nozzle for enabling the nozzle to direct at least two flat fan-shaped jets towards the sealing surfaces of the door or jamb. 
     
     
       3. A machine according to claim 2 in which said flow control means directs the fan-shaped jets so they have a common axis. 
     
     
       4. A machine according to claim 3 in which the jets are equi-angularly spaced. 
     
     
       5. A machine according to claim 4 in which said sealing surfaces include parallel side edges and parallel top and bottom edges extending vertically between said side edges, and said jets are aligned respectively perpendicular to the side edges, and perpendicular to the top and bottom edges. 
     
     
       6. A machine according to claim 1 in which the conveying means includes a chain mechanism. 
     
     
       7. A machine according to claim 6 in which the chain mechanism includes a two parallel chains to which the carrier is attached. 
     
     
       8. A machine according to claim 1 in which the frame includes guide means for guiding the carrier around its closed path. 
     
     
       9. A machine according to claim 1 in which the conveying means is driven by a variable speed motor. 
     
     
       10. A machine according to claim 1 incorporating a high pressure water pump and hose arrangement adapted to supply water at between 1000 and 10000 p.s.i. to the water nozzle means. 
     
     
       11. A machine according to claim 1 in which said nozzle is adjustably mounted on said carrier for movement along its axis with respect to the carrier. 
     
     
       12. A machine for cleaning the sealing surfaces of an oven door or door jamb, said machine including a frame, a driveable conveying means held in said frame and having a carrier mounted thereto, means for driving the carrier continuously on a closed path adjacent and parallel to the sealing surfaces of the door or jamb, the carrier rotating with respect to the door as it traverses the closed path, water nozzle means rotatably mounted in or on the carrier for rotation about the nozzle axis, means for preventing the nozzle from rotating about the axis while the carrier moves on its closed path, and the nozzle means being arranged to direct a jet of water towards the sealing surfaces of the door or jamb.